Die rolling



Dec. 20, 193 8. s. B. WEBSTER 1 DIE ROLLING Filed April 25, 1936 2Sheets-Sheet 1 lnveizfoit' MUEL 5 14 555756,

' Dec. 20, 1938. s B B T R 2,141,101

I DIE ROLLING Filed April 25, 1936 2 Sheets-Sheet 2 Inventor.- 514MUEL5. WE55TEE,

Patented Dec. 20, 1938 UNITED STATES PATENT OFFICE Application April 23,

1 Claim.

This invention relates to die-rolling and more particularly to means forenabling the accurate registry of the matrices of the die-grooves in thecoacting working surfaces of the die-rolls.

In the rolling of series-connected articles, the most prevalent practiceis to employ a pair of die-rolls which are geared together and connectone of the same to a source of power. According to this practice atleast one of the gears which connect the die-rolls is so mounted that itmay be released from the die-roll on which it is carried. In this mannerthe matrices of the coacting die-grooves may be correctly adjusted atthe time the die-rolls are installed in the mill and subsequent thereto.This procedure must, however, be confined to such times when the mill isnot operating; and, in addition, requires considerable time.

There are a number of prior devices which seek to enable the adjustmentof die-rolls without discontinuing the operation of the mill; but theyare expensive to install, cumbersome and require considerable time tooperate.

It is among the objects of the present inven- 25 tion to enable a rapidand extremely accurate peripheral alinement of die-rolls by a compactdevice which is easily and inexpensively installed.

The foregoing and other objects will be apparent after referring to thedrawings, in which:

Figure 1 is a fragmentary sectional end elevation of a die-rolling millemploying the device of the invention.

Figure 2 is a side elevation of the device of Figure 1.

Referring more particularly to the drawings, the numeral 2 designates aroll housing which carries a pair of rotatable die-rolls 3. Thesedierolls 3 are peripherally grooved and provided within the grooves withspaced article-forming 40 matrices 5. The shaft 6 of each die-roll 3carries a gear 1 which may be permanently attached.

Each of the shafts 6 also carries a yoke 9 in the form of a pair ofspaced arms. Between the outer ends of the arms of each yoke 9 there ismounted a shaft H) on which there is carried a gear l2.

The gear I2 on the yoke 9, which is carried by the shaft 6. of the upperdie-roll 3, meshes continuously with the adjacent gear 1; while itscounterpart meshes continuously, and in the same manner, with the gear Ion the shaft 6 of the lower die-roll 3. The two shafts Ill are connectedtogether by a pair of links l3, which thereby hold the gears I2 in meshwith the gears 1 and. in proper pitch circle center distance withrespect thereto. Y

1936, Serial No. 76,019

Referring to Figure 2, the shaft H] which is mounted between the outerends of the arms of the lower yoke 9 is extended outwardly therefrom, asshown at M. This extension l4 carries a downwardly extending pivotallink l5 which is 5 screw-threaded on its extended end, as shown at I6. Asimilar but upwardly extending pivotal link I! is carried by the rollhousing 2. The link I! is screw-threaded on its extended end, as shownat I8, but reversely with respect to the screw-threads IS on the link15. The screwthreaded ends 16 and 18 of the links I5 and I1 respectivelyare connected together with a turnbuckle 20 and provided with lock-nuts2|.

During the rolling operation, improper peripheral alinement of thedie-rolls 3, when observed from the condition of the work-piece, may beeasily and accurately corrected by turning the turnbuckle and loweringor raising the pivotal link [5. This effects the partial revolution ofthe 20 gear l2 on the lower yoke 9 around the gear I on the lowerdie-roll 3 for a limited distance without any peripheral movement of thegear 1 on its axis. The gear 12 on the upper yoke 9 will be reverselyrevolved on its axis and will in turn cause the gear I on the upperdie-roll 3 to revolve in the same direction as the gear l2 on the loweryoke. Therefore, in effect, the lower gear 1 remains stationary whilethe upper gear 1 is slightly revolved, thereby adjusting theartiole-forming matrices 5 in a very accurate and efiicient manner.

While I have shown and described one specific embodiment of myinvention, it will be understood that I do not wish to be limitedexactly thereto, since various modifications may be made withoutdeparting from the scope of my invention, as defined by the followingclaim.

I claim:

In a die-rolling mill, a die-roll, a gear secured to said die-roll, ayoke carried by and extended from said die-roll, a gear carried by saidyoke, said gear being held in mesh with the gear secured to saiddie-roll, a second die-roll, a gear secured to said second die-roll, ayoke carried by and extended from said second die-roll, a gear carriedby said last-named yoke, said last-named gear being held in mesh withthe gear secured to said second die-roll, means connecting said yokes,said means being constructed and arranged to hold in mesh the gearscarried by said yokes, and means for adjusting the position of the meansconnecting said yokes whereby the relative peripheral position ofopposed parts of said dierolls may be adjusted.

SAMUEL B. WEBSTER.

